how much do you know about the bird world阅读理解答案

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1、Howmuchdoyouknowaboutthebirdworld阅读理解答案　　Howmuchdoyouknowaboutthebirdworld　　Birdsusethreegaits:walking,runningandhopping．　　Inwalking,theleftandtherightfeetmoveinturn(轮流)．Eachfootisonthegroundformorethanhalfthetime,sotherearemoretimeswhenbothfeetareontheground．

2、Inrunning,eachfootisonthegroundforlessthanhalfthetime,andtherearemoretimeswhenbothfeetareofftheground．Inhopping,thefeetmovealmostatthesametime．Thismeansthatformuchofthetimebothfeetareofftheground．　　Middle-sizedandlargebirdswalkatlowspeedandeitherrunorhop17教育网：

3、higherspeed．Smallbirds,suchassparrowsandswallows,usuallydonotwalk,becausewalkingmaybetooslowforthem．Itseemsthatthemoretimeabirdspendsintrees,themorelikelyitistohop．Perhapsthereiswidespaceinatreebetweenonethinbranch(树枝)andthenext,sowalkingisnotagoodchoice,while

4、oneachsmallbranchthereisenoughroomtosetbothfeetdownsidebyside,sohoppingseemstomakesense．　　1．Howisthebirdmovingwhenbothfeetareonthegroundformorethatime　　A．Byflying．　　B．Byrunning．　　C．Bywalking．　　D．Byhopping．　　2．Whichofthefollowingshowsabirdishopping　　3．Whydotheb

5、irdsintreesusuallymovebyhopping　　A．Spacebetweenthetwobranchesiswide．　　B．Thebirdsintreesaresmallinsize．　　C．Thereislittleroomtosetthebirds’feeton．　　D．Branchesarehighintheairofftheground．　　4．Whichofthefollowingusuallymovesbyhopping　　A．Aduck．　　B．Achicken．　　C．Asnak

6、e．　　D．Asparrow．　　5．Whatdoestheunderlinedword“gaits”mean　　A．Directionsofflying．　　B．Speedsofmoving．　　C．Waysofmoving．　　D．Timesofstayingintrees．　　答案解析：　　答案：1-5．CBADC